Fracture specimen loading machine
US4075884A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 1977 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Feb 14, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0623
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A machine that can be used for loading of a slotted specimen for measuring the fracture toughness, fatigue crack growth resistance, or stress corrosion crack growth resistance of that specimen, the machine having a pressure bag maintained in a frame, which pressure bag can be installed within the slotted portion of the specimen and expanded to produce a desired specimen loading, the machine preferably involving a load pressure sensing device, can optionally include an arrangement for sensing volume enlargement of the specimen slot, and can also include a movable frame portion that expands with the pressure bag during inflation to discourage crimping of that pressure bag during specimen loading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.